Realized and Potential Fecundity, Egg Fertility, and Longevity of Laboratory-Reared Female Beet Armyworm (Lepidoptera: Noctuidae) Under Different Adult Diet Regimes

By R. A. Tisdale, T. Sappington. 2001

84 citations recorded by the source corpus.

Abstract Longevity, duration of the oviposition period, realized fecundity, potential fecundity, and egg fertility of the beet armyworm, Spodoptera exigua (Hübner), were examined in the laboratory under three different adult diet regimes. All parameters were significantly reduced for the water-only diet compared with 10% honey or sucrose diets, except fertility, which could not be measured after 5 d because of high mortality of water-fed females. Oviposition was highest the night after mating and decreased in a logarithmic manner thereafter. In the carbohydrate-fed moths, 92% of lifetime realized fecundity occurred by the fourth night of oviposition. Although our data indicate that carbohydrates in the adult diet can increase realized and potential fecundity, most of the lifetime complement of oocytes (91%) is present at the time of eclosion from the pupa. Pupal weight was significantly correlated with lifetime potential fecundity, explaining 37–66% of the variation among moths depending on adult diet, and this effect was substantial. Taken together, our results suggest that the bulk of variation in realized fecundity is generated in the larval stage, provided suitable oviposition substrate is available for the adults. This information will be important in understanding population dynamics of beet armyworm and to improving our ability to predict population outbreaks from sampling data.

Subfields: Insect Science, Molecular Biology, Plant Science

View Paper: https://www.semanticscholar.org/paper/5b60afc528299307270784eb8d920e88ecf4635e

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In Insect Science

1. S. Saeed
2. I. Ahmad
3. R. Fox
4. A. H. Sayyed

In Molecular Biology

1. S. Saeed
2. I. Ahmad
3. A. H. Sayyed

In Plant Science

1. S. Saeed
2. I. Ahmad
3. R. Fox
4. D. Evans
5. A. H. Sayyed
6. Mamoudou Sétamou

Citations in the corpus

• Feeding and Life History of Spodoptera exigua (Lepidoptera: Noctuidae) on Different Host Plants (2001, background): “Tisdale and Sappington (2001) showed that both potential and realized lifetime fecundity were signiÞ- cantly related to pupal weight for S. exigua reared on artiÞcial diet, but that fecundity was also affected by adult diet.”
• Is light pollution driving moth population declines? A review of causal mechanisms across the life cycle (2020, background): “Many adult moths feed, typically on nectar from flowers, which increases their longevity and fecundity (Leather, 1984; Leahy & Andow, 1994; Tisdale & Sappington, 2001; Song et al., 2007) and there is strong evidence that ALAN can disrupt his behaviour.”
• Effect of host plants on life-history traits of Spodoptera exigua (Lepidoptera: Noctuidae) (2010, result): “Our results are similar to Tisdale and Sappington (2001) who showed that both potential and realized lifetime fecundity were significantly related to pupal weight for S. exigua reared on artificial diet, but that fecundity was also affected by adult diet.”